Street-sweeper



(No Model.)

A. P. PALMER & H. L. PH'ELP STREET SWEEPER- 2 SheetsSheet 1 PatentedDec. .26, 1893.

WITNESSES:

km V g, INVETQ ORS M I I j TTTTTT noun. umoeRAFHma COMPANY.

NGTON. n. c.

ATTORNEYS.

(No Model.) 2 $heets-'-Sheet 2. A. P. PALMER 8v;H'. L. PHELPS.

STREET SWEEPBR; I

Patented D ec.'Z6, 1893.

INVENTORS WITNESSES:

1115 NATIONAL umcannnma CDMPANY. wuumqwn, D- c.

I UNITE AATENT FFICEQ ARTHUR P. PALMER AND HOMER L. PHELPS, OF ATHENS,PENNSYLVANIA.

STREET-SW'EEPER.

SPECIFICATION forming part of Letters Patent No. 511,543, dated December26, 1893.

Applicationfiledll'ovember 28, 1892. $erial No. 453.306. (No model.)

To 00% whom it may concern:

Beitknown that we, ARTHUR P. PALMERand HOMER L. PHELPS, of Athens, inthe county of Bradford, in the State of Pennsylvania, have invented newand useful Improvements in Sweepers, of which the following, taken inconnection'with the accompanying drawings, is a full, clear, and exactdescription.

Our invention relates to sweepers and par-. ticularly to that classwhich are adapted to elevate the dirt, &c., into a receiver,in which itis collected and retained until dumped into a cart or wagon.

Our object is to provide a sweeper in which the brush operates to throwthe sweepings into a primary receiving chamber, over a dust-pan madeflexible so that itjwill automatically conform itself to the surface ofthe ground or pavement, and located in front of the brush in which arapidly rotating shovel passes the sweepings from said primary chamberinto the main receiver through a flue; in which the blast of air, ifany, being first given an opportunity in the main receiver to settle outthe dust in flotation, passes out from said receiver through a reverseflue; in which the main receiver is also a dump-box, in that it isadapted to be swung over upon a pivot so as to dump the sweepings intoacart; and in which the whole .operating force is centrifugal.

Our invention consists in the several novel features of construction andoperation which are hereinafter described and which are specifically setforth in the claim hereunto annexed. It is constructed as follows,reference being had to the accompanying drawings, in which-- Figure 1,is a perspective view of the sweeper, one end of the brush sheath beingremoved. Fig. 2, is a vertical transverse section of the same. Fig. 3,is a like view showing the main receiver partly tilted to dump thesweepings. Fig. 4, is a sectional detall of one supporting wheel, itsaxle shaft, and the drive gear secured thereto.

A. A. are the main supporting wheels, secured upon the axle shaft awhichmay be in a single piece upon which both wheels are secured, or it mayconsist of two independent sections, suitably journaled in or upon thebody -B. This body is carried by a frame comprising the side rails -bthe front cross bar cand the rear cross-rod -cZ-, and the draft isapplied to said front cross-bar in any ordinary manner, as by a pole efor a two-horse machine, or by ordinary thills for a one-horse machine.

The body is divided into two parts, the lower of which is stationary andcomprises the sheath 'hfor the brush 7c comprising the front h and therear h, the primary chamber mwith the top m and the bottom m. forreceiving the sweepings and the flue 'nleading upward therefrom into theupper part D- of said body, which constitutes the main receiver which isrearwardly and pivotally mounted upon the cross-rod dwhile its loweredges abut against and rest upon the lower sections, being also providedwith an aperture n'- adapted to coincide with the flue -nand with atransverse partition -pcoinciding with the wall p'- of the lowersection, and the front 1' of the upper section also coincides with thefront r of the lower section, said walls p1oand r-r-- together creatinga reverse air-escape flue E for the passage of the air from the mainreceiver or dumpbox D.

Upon the lower body section a Windlass shaft -1- is mounted in suitablebearings and provided with a suitable crank, or cranks ---2-, and --3-isa chain (or chains) secured to said shaft, and having its lower endconnected to the lower corner or rear face of the dump-box, in suchmanner that when the chain or chains are wound upon the shaft, saiddump-box is raised and tilted upon its pivot, as shown in Fig. 3, untilthe sweepings are dumped therefrom into a cart, or in a heap upon theground, The dump-box is provided with a cover thinged to the body,projecting beyond its sides, and 5 is a spring or other arm secured tosaid cover projection,

its free end being hinged to the rod 6 which in turn is hinged to theside frame bar. A like arm and rod may also be connected to theprojection of the other end of the cover. Then when the dump-box istilted said connection operates both to open said cover and to hold itopen; and also to hold it closed tight when said arm -5- is a spring.

The brush kis mounted upon a central shaft suitably journaled and isprovided with a sprocket gear 7-- on one or both ends, and may be of anyconstruction desired, and is adapted to be rotated adjacent to the rearedge of the dust-pan -8-, which is of rubber, canvas, or other flexiblematerial so that it will adapt itself to or conform to and followclosely all of the inequalities of the ground or pavement, having itsfront edge secured to the lower edge of that part of the body whichconstitutes the primary receiving chamber. This chamber is circular intransverse section, having an opening 9 above the dust-pan, and in it,upon a shaft suitably journaled, the

rotary shovel is mounted, comprising arms,

--10- radiating from said shaft, and provided with blades -11, parallelto said shaft, which scrape the interior of said chamber, and whendriven rapidly picks up the sweepings, and centrifugally throws themthrough the flue -ninto the dump-box.

The shovel shaft is provided upon one or both of its projecting endswith a pinion -12- which meshes with the drive gear -13-- comprising ageared rim, spokes and a hub u secured together, said hub being recessedto fit over the hub of the supporting wheel, and is secured to theaxle-shaft by a set-screw 14-.

A sprocket wheel 1) (not shown) is secured upon the shovel shaft withinand contiguous to the pinion l2 and 15- is a belt passing over it andthe sprocket 7--, so that the rotation of the main wheel rotates theaxle-shaft, the drive gear, the shovel and the brush.

When the sweepings are thrown into the dump-box, the air blown into it,also carries more or less dust, which has an opportunity to settle outin said dump-box, and said air thence escapesthrough the reverseflue -E,and thus the machine is substantially, if not absolutely, dustless inits operation.

Suitable braces -16- support the brush sheath from the side bars of theframe.

What we claim as our invention, and desire to secure by Letters Patent,is

Theco-mbination with the rotating brush, and its chamber, the rotatingshovel and its chamber, the axle, the frame in which the axle and thebrush and shovel shafts are journaled, the drive gear mounted upontheaxle, the pinion upon the shovel shafts,.the-sprockets upon thebrushand shovelshafts andthe belt around said sprockets, of the flue.lead ing from the shovel chamber to. the dump.- box, the tiltingdump-box receiving the sweepings from the shove], the sectional reverseflue partly in said dump-box and partly exterior thereto,.and means totilt. said box.

In witness whereotwe have hereunto set our hands this 18th day ofNovember,1892.

ARTHUR P. PALMER. HOMER L. PHELPS. Witnesses:

LoUIs E. HOYT, JOSEPH HINES.

